IndividualActive
Mary Roy, M.D.
NPI 1477679025 · Specialist · Naperville, IL
Mary Roy, M.D. is a Specialist provider in Naperville, IL (NPI 1477679025).
Provider details
- NPI number
- 1477679025
- Entity type
- Individual
- Primary specialty
- SpecialistOther Service Providers
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Other Service Providers
Profile Score
Detailed profile(83/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
4355 Montgomery Rd
Naperville, IL 60564
Phone: (630) 236-8300
Fax: (630) 236-6890
Street-level locationGet directions
Mailing address
928 Hobson Rd
Naperville, IL 60540-8142
Registry dates
- Enumerated
- 2007-03-22
- Last updated
- 2007-07-08
Frequently asked questions
- What is Mary Roy's NPI number?
- Mary Roy's National Provider Identifier (NPI) is 1477679025, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Roy's specialty?
- Mary Roy is listed in the NPPES registry with a primary specialty of Specialist (Other Service Providers).
- Where is Mary Roy located?
- Mary Roy's practice location on file with NPPES is 4355 Montgomery Rd, Naperville, IL 60564.
- What is Mary Roy's phone number?
- The practice phone number listed in the NPPES registry for Mary Roy is (630) 236-8300.
- Is Mary Roy's NPI active?
- Yes — Mary Roy's NPI (1477679025) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.